/*
 * Tencent is pleased to support the open source community by making BK-JOB蓝鲸智云作业平台 available.
 *
 * Copyright (C) 2021 THL A29 Limited, a Tencent company.  All rights reserved.
 *
 * BK-JOB蓝鲸智云作业平台 is licensed under the MIT License.
 *
 * License for BK-JOB蓝鲸智云作业平台:
 * --------------------------------------------------------------------
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of
 * the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
 * THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

package com.tencent.bk.job.common.web.config;

import com.tencent.bk.job.common.metrics.CommonMetricTags;
import com.tencent.bk.job.common.util.StringUtil;
import io.micrometer.core.instrument.Tag;
import io.micrometer.core.instrument.Tags;
import org.springframework.boot.actuate.metrics.web.servlet.WebMvcTags;
import org.springframework.boot.actuate.metrics.web.servlet.WebMvcTagsContributor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ApiTypeTagsContributor implements WebMvcTagsContributor {

    @Override
    public Iterable<Tag> getTags(HttpServletRequest request, HttpServletResponse response, Object handler,
                                 Throwable exception) {
        Tag uriTag = WebMvcTags.uri(request, response);
        return Tags.of(CommonMetricTags.KEY_API_TYPE, parseApiTypeFromUri(uriTag.getValue()));
    }

    @Override
    public Iterable<Tag> getLongRequestTags(HttpServletRequest request, Object handler) {
        Tag uriTag = WebMvcTags.uri(request, null);
        return Tags.of(CommonMetricTags.KEY_API_TYPE, parseApiTypeFromUri(uriTag.getValue()));
    }

    private String parseApiTypeFromUri(String uri) {
        uri = StringUtil.removePrefix(uri, "/");
        int slashIndex = uri.indexOf("/");
        if (slashIndex > 0) {
            return uri.substring(0, slashIndex);
        }
        return CommonMetricTags.VALUE_API_TYPE_UNKNOWN;
    }
}
